4 Pin US Trailer Plug Waterproof Tow Harness For RVs Recommended

Feature: \n 1. Standard American car, modified trailer plug, suitable for a wide range.\n2. Pure copper contact point, good conductivity, the surface nickel, more resistant to corrosion.\n3. Waterproof seal, to prevent rainy day water.\n4. With a lock, to prevent the driving plug due to vibration off.\n5. American seven-pin plug, is the standard car accessories, widely used in a variety of trailers and trailers all kinds of trailers. \n\nSpecification: \nFeatures:\n\n--\n\nStandard American car, modified trailer plug, suitable for a wide range.  \n\n--\n\nPure copper contact point, good conductivity, the surface nickel, more resistant to corrosion.  \n\n--\n\nEnvironmentally friendly plastic shell.  \n\n--\n\nWaterproof seal, to prevent rainy day water.  \n\n--\n\nWith a lock, to prevent the driving plug due to vibration off.  \n\n--\n\nAmerican seven-pin plug, is the standard car accessories, widely used in a variety of trailers and trailers all kinds of tra: